Blower-casing.



W. W. WAINWBIGHT.

BLOWER CASING.

APPLICATION FILED 001'. 2a, 1907.

Patented Nov. 3, 1908.

2 SHEETS-SHEET 1.

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William 141 h az'n rjyhr.

W. W. WAINWRIGHT.

BLOWER CASING.

APPLICATION FILED 001. 28, 1907.

Patented Nov. 3, 1908. v

2 SHEETS-SHEET 2.

wih twoao WILLIAM W. WAINWRIGHT, OF OONNERSVILLE, INDIANA.

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Specification of Letters Patent.

Patented Nov. 8, 1908.

Application filed October 28, 1907. Serial No. 399,521.

To all whom it may concern:

Be it known, that 1, WILLIAM "W. VVAIN- wluonr, a citizen of the United States, re siding at Connersville, in the county of Fayette and State of lndiana, have invented certain new and useful Improvements in Blower-Casings, of which the following is a specification. Y

The object of myinvention is to produce a very compact and light blower of the rotary impeller type wherein the coacting impellers are driven by a multiplying gearing and the sheet-metal casing is of such character, as to inclose not only the cooperating impellers, but also the multiplying gearing.

A. further object of my invention is to so construct the various sheet metal heads that they may be readily utilized in the production of blowers of various capacities, the only change necessary being an increase in length of the barrel within which the impellers are located and a corresponding increase in the length of the impellers. i

The accompanying drawings illustrate my invention: r V

Figure 1 is an axial section; Fig. 2 an elevation of one end; l3 3 an elevation of the opposite end; Fig. l an elevation of one side of the intermediate partition; Fig. 5 an elevation of the opposite side of said partition, and Fig. 6 a transverse section through the impeller barrel.

In the drawings, 10, 10 indicate a pair of co-acting lobed impellers each of which is preferably formed of a shaft 11, a sheet metal head 12 at each end provided with an M inwardly pro ecting flange 13 around its periphery, and a fitted sheet-metal shell 14:, secured to the flanges 13 by brazing or otherwise. Each shaft 11. projects beyond one end of its impeller 10, at 11, and slipped over these ends is an end plate 15 which is of such shape as to fit within the sheet metal barrel 16, preferably formed of tubing, which is of the usual shape to form a chamher for the impellers 10. Thehead 15 at its shafts are projected, at 11, and slipped over lyin within the adjacent end of barrel 16, and being held in place by a sheet-metal pa rtition head 22 provided at its edge with a flange 23 which overlaps the barrel 16, and

provided on its other face with a pair of The several parts are readily bound together by a pair of longitudinal clamping bolts 28, 28 which pass through the heads 18--1515'-22 and 26, being clamped in place by nuts 29. Suitable ball bearings are placed in the flanges 22 to receive the shaft portions 11. and any suitable multiplying gearing may be used to connect the operatlhese is a head 15 like head 15, said head 15 ing crank 30 with two impellers so as to rotate them in opposite directions at a desired speed. A very convenient and cheap system of gears is that shown in Fig. 1.

lhis train consists of a large driving gear 31 slipped upon one of shafts 11 and having a hub projecting through head 26, the crank 30 being secured to said hub. Gear 31 meshes with a small pinion 32 sleeved upon the other shaft 11" and pinned to this gear 32 is'a larger gear 33 which meshes with a pinion 34 keyed to the first shaft 11,. Pinned to gear 34 i s a gear 35 which meshes with a gear 36 of the same size pinned to the other shaft 11, all of said gears being.

"solidly without difficulty. Each of the foot members is provided with int'iirned lips;

(shown in dotted lines in Figs. 2 and 3) which lie beneath the barrel and thus hold the foot members rigidly in position. Of course it will be readily understood that if it is desired to arrange the structurewith the shafts 11 in a vertical position, the two foot members 40 and 41 may both. be readily secured upon head 18 by a slight modification in their form. v i

I claim as myinvention:

1. In a blower of the two-impeller type, comprising a main sheet-metal body-barrel,

a sheet-metal head for one end thereof, said headhaving a flange overlapping the end of the body-barrel "and having upon its outer face a pair of .circular flanges, bearings mounted 1 said circular flanges for the reception of 1 peller shafts, a sheet-metal partition arranged at the oppositeend of the body-barrel and having, a flange overlapping the same and also having a pair of circular flanges coaxial with the flanges of the opposing head, bearings mounted in said circular flanges, a pair of rotary impellers mounted within the main body-barrel and supported in the bearings carried by the head and partition, :1 lining plate fitted within the main body-barrel between the end' of the impellers and the head and between the opposite end of the impellers and the partition, and gearing between the impellers outside said partition. J

2. In a'blower of the two-impeller type,

" comprising a main sheet-metalbody-barrel,

a sheet-metal head for one-end thereof, said head having aflangeoverlapping the end of the body-barrel and having upon its outer face a pair of, circular flanges, bearings mounted in said circular flanges for the reception of impeller, shafts, a sheet-metal partition arranged at the opposite end of the body-barrel and having a flange overlapping the same and also having a pairof circularflanges coaxial with the flanges of the opposing head, bearings mounted in said circular flanges, a plurality of tongues struck out from the partition near the eriphery thereof and extended in a directi on opposite from the vmain body-barrel, a sheetmetal gear-barrel similar to the main bodybarrel mounted upon saidtongues, a sheetmetal head having a flange adapted to fit the outer end of'said gear-barrel, and multiplying gearlng mounted within ,theg earbarrel and forming .a connection between 'the two rotary lmpellers, the initial memberof said'multiplying 'gea'r extending through the last mentioned head and carrying means bywhich it may be driven.

3. In a blower of the two-impeller type,

vcomprising a main-sheet-metal body-barrel,

a sheet-metal head for one end thereof, said head havinga flange overlapping the end of the body-barrel and having upon its outer face a pair of circular flanges, a bearings mounted in said circular flanges for-the re- -ception bf impeller shafts, a sheet-metal partition arranged at the opposite end ofthe body-barrel and having a flange overlapping the same and also having a pair of circular flanges coaxial with the flanges of the opposing head, bearings mounted in. said circular flanges, a pair ofrotary impellers mounted within the main body-barrel and supported in the bearings carried by the head and partition, a lining plate fitte'd within the "main body-barrel between the end of the impellers and the head and between tlte opposite end of the impellers and the partition, gearing between the impellers outside said partition, sheet-metal foot members formingthree points of support at-.

tached to opposite ends of the structure, and

first mentioned head, all substantially as an .for the purpose set forth.

4. In a blower of the two-lmpeller type, comprising main sheet-metal body-barrel, 'a sheet-metal head for one end thereof, said head having a flange overlapping the end of the body-barrel and having upon its outer face a pair of circular flanges, bearings mounted in said circular flanges for the reception of impeller shafts, a sheet-metal partition arranged at the opposite end of the body-barrel and having a flange over lapping the same and also having a pair of circular flanges coaxial with the flanges of- I the opposinghead, bearings mounted in said circulan flanges, a plurality of tongues struck" out from the partition near the periphery thereof and extended in a direction opposite from the main body-barrel, a sheet:

caps sleeved over the circular flanges of the metal-gear-barrel similar to the main body- In witness whereof, I, have hereunto set any hand and seal at- Indianapolis, Indiana, this twenty-sixth day of October, A. D. one thousand nine hundred and seven.

. WILLIAM w; WAINWRIGHTI Witnesses:

ARTHUR M. Hoon,

THOMAS W. MCMEANS. 

